Recent global climate change is alarming

Although yesterday I said that I thought that the recent global climate warming did not seem to be alarming since the earth has been going through a general cooling period for the last 100 million years, scientists at the Global Climate Change Student Guide website believe there are reasons for concern. Here is an excerpt from the epilogue of their excellent fact-filled online book:

Today we may be witnessing one of the most profound climatic changes in the Earth’s history. Certainly, larger changes in global climate have occurred in the past, but over much longer time periods. The danger facing the global society today is that anthropogenic global warming may be too fast to allow humans, and other species, to adapt to its detrimental impacts. In addition, through enhanced greenhouse forcing, we may be pushing the climate system towards a bifurcation point, where climatic responses may become highly non-linear through complex feedback processes, driving the system to a completely different, and most probably, inhospitable state for humankind.